In this study, boiler ash containing potassium silicate (BA 900) and potassium silicate (K _(2) SiO _(3) ) were proven to be feasible Lewis acid catalysts for the synthesis of different organic carbonates (glycerol carbonate, ethylene carbonate, and propylene carbonate) from different polyol (glycerol, ethylene glycol, and propylene glycol) feedstocks. In addition, the developed catalytic reaction has the ability to produce propylene carbonate at milder reaction temperatures. BA 900 and K _(2) SiO _(3) were reusable for three consecutive reaction cycles without the loss of activity. The reusable characteristics of catalysts were confirmed through several characterisation techniques, i.e. XRD, FTIR, XRF, N _(2) physisorption, FESEM-EDX, and Hammett test. All organic carbonates synthesised had a similar synthetic mechanistic pathway, which involved decomposition of intermediate carbamates into their respective carbonates.
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机译：在该研究中，含硅酸钾（Ba 900）和硅酸钾（K _（2）SiO _（3））的锅炉灰被证明是可行的路易斯酸催化剂，用于合成不同的有机碳酸盐（甘油碳酸酯，碳酸亚乙酯，来自不同多元醇（甘油，乙二醇和丙二醇）原料的丙烯碳酸丙酯。此外，开发的催化反应能够在MILLAS MILLS反应温度下生产碳酸亚丙酯。 BA 900和K _（2）SIO_（3）可重复使用三个连续的反应循环，而不会丧失活动。通过几种表征技术确认催化剂的可重复使用特性，即XRD，FTIR，XRF，N _（2）理由，FESEM-EDX和Hammett试验。合成的所有有机碳酸盐具有类似的合成机械途径，其涉及中间氨基甲酸酯的分解成其各自的碳酸盐。
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